Bert Coules wrote:

"ss" wrote:

I mentioned that in post above but rethinking it maybe that the board is
slightly too long and is wedged in somewhere beyond the kickboard causing
it to bow upwards.

Yes, thanks for that: sorry I failed to acknowledge it earlier. With the
kickboards removed I tried to see how much (if any) gap had been left
between the laminate and the walls but it's very difficult to gauge.

Could it be that the weight of the units themselves is sufficient to prevent
the laminate's proper degree of expansion and contraction?
snip

You mean by friction stopping it sliding a mm or two against the
kickboards? I don't think this is even remotely possible, the forces
from friction are going to be much too small to cause the laminate to
buckle because of the compressibility of the underlay. I could be
completely wrong of course,

--

Roger Hayter